45 U.S. lawmakers have disclosed 134 Merck & Co., Inc. trades under the STOCK Act — 73 buys and 61 sells between 2013 and 2026. Congress has been net buyers of MRK, and their disclosed buys are up 46.1% versus the latest close.
*Notional-weighted price return on lawmakers' disclosed buys of MRK, marked to the latest close — per-share (share counts aren't disclosed).
Lawmakers ranked by notional-weighted return on their disclosed MRK buys (last ~3y), marked to the latest close.
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2020-03-31 | David A Perdue , Jr | SELL | $15K–$50K | $73.42 | $135.55 2026-08-13 | +17.5% rt |
| 2020-03-30 | Robert J. Wittman | BUY | $1K–$15K | $73.43 | $135.55 2026-08-13 | +84.6% |
| 2020-02-20 | Lois Frankel | BUY | $1K–$15K | $78.71 | $135.55 2026-08-13 | +72.2% |
| 2020-02-19 | Lois Frankel | BUY | $1K–$15K | $78.24 | $135.55 2026-08-13 | +73.2% |
| 2020-02-06 | Mikie Sherrill | SELL | $770.32–$770.32 | $81.76 | $135.55 2026-08-13 | -65.8% exit |
| 2020-02-05 | Kelly Loeffler | SELL | $1K–$15K | $81.90 | $135.55 2026-08-13 | -65.5% exit |
| 2020-02-05 | Kelly Loeffler | SELL | $1K–$15K | $81.90 | $135.55 2026-08-13 | -65.5% exit |
| 2019-07-22 | Bryan George Steil | SELL | $1K–$15K | $77.49 | $135.55 2026-08-13 | -74.9% exit |
| 2019-07-12 | Bryan George Steil | SELL | $1K–$15K | $76.08 | $135.55 2026-08-13 | -78.2% exit |
| 2019-06-24 | David P. Roe | BUY | $1K–$15K | $81.59 | $135.55 2026-08-13 | +66.1% |
| 2019-04-18 | Mikie Sherrill | SELL | $1K–$15K | $69.84 | $135.55 2026-08-13 | -94.1% exit |
| 2019-04-10 | David A Perdue , Jr | SELL | $15K–$50K | $77.12 | $135.55 2026-08-13 | +23.5% rt |
| 2019-02-19 | David A Perdue , Jr | SELL | $15K–$50K | $75.61 | $135.55 2026-08-13 | +21.7% rt |
| 2019-01-11 | James M Inhofe | SELL | $100K–$250K | $71.47 | $135.55 2026-08-13 | +30.5% rt |
| 2018-10-29 | David A Perdue , Jr | SELL | $1K–$15K | $68.18 | $135.55 2026-08-13 | +9.7% rt |
| 2018-10-03 | David A Perdue , Jr | SELL | $15K–$50K | $68.10 | $135.55 2026-08-13 | +11.1% rt |
| 2018-06-04 | Susan M Collins | BUY | $1K–$15K | $59.18 | $135.55 2026-08-13 | +129.1% |
| 2018-04-24 | David A Perdue , Jr | BUY | $1K–$15K | $57.34 | $135.55 2026-08-13 | +136.4% |
| 2018-01-16 | David A Perdue , Jr | BUY | $100K–$250K | $59.23 | $135.55 2026-08-13 | +128.9% |
| 2018-01-08 | Alan S. Lowenthal | SELL | $567.58–$567.58 | $54.06 | $135.55 2026-08-13 | +11.3% rt |
| 2018-01-04 | Shelley M Capito | SELL | $1K–$15K | $54.44 | $135.55 2026-08-13 | -149.0% exit |
| 2018-01-04 | Shelley M Capito | SELL | $1K–$15K | $54.44 | $135.55 2026-08-13 | -149.0% exit |
| 2018-01-04 | Shelley M Capito | SELL | $1K–$15K | $54.44 | $135.55 2026-08-13 | -149.0% exit |
| 2017-12-13 | David A Perdue , Jr | SELL | $100K–$250K | $54.30 | $135.55 2026-08-13 | -11.4% rt |
| 2017-11-27 | Sheldon Whitehouse | SELL | $15K–$50K | $52.05 | $135.55 2026-08-13 | -8.3% rt |
| 2017-11-21 | Virginia Foxx | SELL | $15K–$50K | $51.78 | $135.55 2026-08-13 | -15.1% rt |
| 2017-11-09 | John A. Yarmuth | BUY | $1K–$15K | $53.64 | $135.55 2026-08-13 | +152.7% |
| 2017-11-08 | Alan S. Lowenthal | SELL | $15K–$50K | $53.99 | $135.55 2026-08-13 | +11.1% rt |
| 2017-10-30 | David A Perdue , Jr | BUY | $1K–$15K | $52.20 | $135.55 2026-08-13 | +159.7% |
| 2017-10-27 | David A Perdue , Jr | BUY | $15K–$50K | $55.57 | $135.55 2026-08-13 | +143.9% |
| 2017-10-26 | Shelley M Capito | SELL | $1K–$15K | $59.15 | $135.55 2026-08-13 | -2.6% rt |
| 2017-10-18 | David A Perdue , Jr | BUY | $1K–$15K | $60.60 | $135.55 2026-08-13 | +123.7% |
| 2017-10-11 | Virginia Foxx | BUY | $1K–$15K | $60.86 | $135.55 2026-08-13 | +122.7% |
| 2017-10-05 | David A Perdue , Jr | BUY | $1K–$15K | $61.64 | $135.55 2026-08-13 | +119.9% |
| 2017-09-29 | David A Perdue , Jr | BUY | $1K–$15K | $61.10 | $135.55 2026-08-13 | +121.9% |
| 2017-09-29 | David A Perdue , Jr | BUY | $1K–$15K | $61.10 | $135.55 2026-08-13 | +121.9% |
| 2017-09-27 | David A Perdue , Jr | BUY | $1K–$15K | $61.61 | $135.55 2026-08-13 | +120.0% |
| 2017-09-27 | David A Perdue , Jr | BUY | $1K–$15K | $61.61 | $135.55 2026-08-13 | +120.0% |
| 2017-09-26 | David A Perdue , Jr | BUY | $1K–$15K | $61.79 | $135.55 2026-08-13 | +119.4% |
| 2017-09-26 | David A Perdue , Jr | BUY | $1K–$15K | $61.79 | $135.55 2026-08-13 | +119.4% |
| 2017-09-22 | David A Perdue , Jr | BUY | $15K–$50K | $62.15 | $135.55 2026-08-13 | +118.1% |
| 2017-09-22 | David A Perdue , Jr | BUY | $15K–$50K | $62.15 | $135.55 2026-08-13 | +118.1% |
| 2017-09-21 | David A Perdue , Jr | BUY | $1K–$15K | $62.60 | $135.55 2026-08-13 | +116.5% |
| 2017-09-21 | David A Perdue , Jr | BUY | $1K–$15K | $62.60 | $135.55 2026-08-13 | +116.5% |
| 2017-09-12 | David A Perdue , Jr | BUY | $1K–$15K | $62.46 | $135.55 2026-08-13 | +117.0% |
| 2017-09-12 | David A Perdue , Jr | BUY | $1K–$15K | $62.46 | $135.55 2026-08-13 | +117.0% |
| 2017-09-11 | David A Perdue , Jr | BUY | $1K–$15K | $62.15 | $135.55 2026-08-13 | +118.1% |
| 2017-09-11 | David A Perdue , Jr | BUY | $1K–$15K | $62.15 | $135.55 2026-08-13 | +118.1% |
| 2017-09-08 | David A Perdue , Jr | BUY | $15K–$50K | $61.33 | $135.55 2026-08-13 | +121.0% |
| 2017-09-08 | David A Perdue , Jr | BUY | $15K–$50K | $61.33 | $135.55 2026-08-13 | +121.0% |
Return: buys marked to the latest close (open); sells tagged rt are realized round-trips vs a prior disclosed buy; exit = timing (stock move after the sale, seller's perspective).
45 members of the U.S. House and Senate have disclosed Merck & Co., Inc. transactions under the STOCK Act — 73 purchases and 61 sales. The full member-by-member breakdown, with dates and dollar ranges, is in the table above.
No member of Congress has disclosed a MRK purchase in the last 90 days. STOCK Act filings lag the trade by up to 45 days, so newer buys may still be pending disclosure.
Notional-weighted, lawmakers' disclosed MRK buys are up 46.1% versus the latest close of $135.55. Each trade's own return — and realized round-trips on matched sells — is in the Return column.
Yes. Under the 2012 STOCK Act, members of Congress may buy and sell individual stocks but must publicly disclose each transaction within 45 days. Bargo surfaces those filings so you can see who traded MRK and how it performed.